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2. Survey marker - Wikipedia

   en.wikipedia.org/wiki/Survey_marker

   Survey markers, also called survey marks, survey monuments, or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying . A benchmark is a type of survey marker that indicates elevation ( vertical position ).

3. Benchmarking (hobby) - Wikipedia

   en.wikipedia.org/wiki/Benchmarking_(hobby)

   Benchmarking, also known as benchmark hunting, [1] is a hobby activity in which participants find benchmarks (also known as survey markers or geodetic control points). The term "benchmark" is used only to refer to survey markers that designate a certain elevation , but hobbyists often use the term benchmarks to include triangulation stations or ...

4. Cadastral surveying - Wikipedia

   en.wikipedia.org/wiki/Cadastral_surveying

   A cotton spindle spike in Tel Aviv pavement, used as a marker for public area cadastral surveying. Cadastral survey monuments can be either natural or artificial. Natural monuments are things such as trees, large stones, and other substantial, naturally occurring objects that were in place before the survey was made and are very unlikely to be ...

5. Benchmark (surveying) - Wikipedia

   en.wikipedia.org/wiki/Benchmark_(surveying)

   An Ordnance Survey cut mark in the UK Occasionally a non-vertical face, and a slightly different mark, was used. The term benchmark, bench mark, or survey benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately ...

6. Public Land Survey System - Wikipedia

   en.wikipedia.org/wiki/Public_Land_Survey_System

   The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 to survey land ceded to the United States by the Treaty of Paris in 1783, following the end of the ...

7. List of principal and guide meridians and base lines of the ...

   en.wikipedia.org/wiki/List_of_principal_and...

   Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.